Question

Show transcribed image textIn a certain decade resistance box resistors are arranged so that four resistances may be connected in series to obtain a desired result The first selector uses 10 resistances of 1000, 2000, , 9000, the second uses 10 of 100, 200, , 900, the third uses 10 of 20, , 90, and the fourth, 1,2, , 9 Ohm. Thus, the overall range is 0 to 9999 Ohm. If all the resistors have an uncertainty of 1.0 percent, calculate the percent uncertainties for tool resistances of 9, 56, 148, 1252, and 9999 Ohm.